Therapeutic lamp



Nov. 6, 1928. 1 1,690,717

L. BROWN THERAPEUT I G LAMP Filed Aug. 18, 1927 Patented Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

-I 4L0YD BROWN, DES MOINES, IOWA.

'rnnnarnurrc LAMP.

Application filed August 18, 1927. Serial No. 213,787

The object'of my invention is to provide a therapeutic lamp of simple, durable and inexpensive construct-ion.

More particularly it is my object to provide such a lamp in a portable construction adapted to be carried and handled in one hand and provided with adjustable carbon holding means whereby a pair of carbons can be held in position with their axes at an acute angle to each other, said device having means whereby the holders may e simultaneously adjusted by the hand t at holds the support for varying the angle and the distance apart of the carbon holders and the carbons carried thereby.

With my lamp I use carbons of a special composition for securing the desired light rays, are etc., but the composition of these carbons forms no part of my present invention.

With these and other objects in view, my invention consists in the construction, ar-

rangement and combination of the various parts of my device, whereby the objects contemplated are attained, ashereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings in which:

Figure 1 is a front elevation of a therapeutic lamp embodying my invention.

Figure 2 is a vertical sectional detail view taken on the line 2-2 of Figure 1.

Figure 3 is a vertical sectional view taken on the line 33 of Figure 2, s

Figure 4'i s a perspective View of one of the operatin parts.

Figure 5 1s a detail sectional View taken on the line 5-5 of Figure 3 illustrating the end ofone of the carbon holders andthe manner of mountingthe carbon therein.

Figure 6 is a-detail sectional view taken on" the line 6-6 of Figure illustrating the joint between one of the carbon holders and its supporting post.

In the accompanying drawings I have used the reference numeral '10 to indicate the support forming a part ofmy lamp and serving as a protective shield. The support 10 is in the form of a concavo convex sheet of aluminum or any suitable material preferably having the shape of approximately one-fourth of a hollow sphere.

For convenience I shall refer to the concave face of. the support 10 as its front face.

1 ing the lamp to slightly below the middle thereof is a suitable handle 12. The space substantially above the handle near the upper part of the support 10 holds a sight glass 14 which is mounted in a hole in the support. This sight glass is preferably colored to permit convenient observation of the are formed with my lamp.

Suitably mounted about mid-Way of the top and bottom of the lamp and spaced on opposite sides from the middle thereof are two posts 16. For mounting the posts I cut in the support 10 suitable holes and form offset rabbets 18 around these holes. Disks 20 of fiber or other suitable insulating material are set in the rabbets 18 and cemented or otherwise securely fixed therein. Each post 16 has near its foot a flange or base 22 from which there extends in the line of the main body of the post a short foot 24 which is extended through a suitable hole in one of the disks 20. The foot 24 is threaded to receive the lock nut 26.

Conduct-ing wires 28 and 30 may be connected with the posts 16 by additional nuts -32. The'posts are thus inclined inwardly toward each other, assumbe in upright position, as clearly illustrated in Figures 1 and 3. The forward end of each post 16 is bifurcated to provide the spaced arms 34. Pivoted be tween each pair of arms 34 is a rear end of a carbon holder 36 which is connected to the arms 34 by means of a pivot pin 38. The forward ends of the carbon holder 36 are tubular having the sockets 39 to receive the carbons 40 which are adjustably locked in place by means of set screws 42 mounted in the wall of the socket portions 39 of the and horizontally holders 36, A threaded screw bolt 44 projects through the support 10 preferably j ust above its middle point and has a screw threaded connection with the support 10. At its rear end the screw 44 has a knurled head 47 The forward portion of the screw 44 is tubular and receives the rear end of a v connecting rod or link 46. The link 46 has formed in it an annular groove 48.

v A set screw 50 projects through the wall of the screw 44'into the groove 48 for-holding the link 46 against longitudinal movement. with relation to the screw 44, while permitting the screw 44 to rotate without affecting rotation of the link 46. The link 46 has an offset portion 46 which has the spaced arms 52 which receive between them an equalizer block 54. The equalizer block 54 has a hole 56 to receive a pin 58 by which the block 1s pivoted to the arms 52. The equalizer block 54 has in its forward portion aligned slots 60 extending inwardly toward each other from the ends of the block. Projecting .toward the equalizer block 54 from the respective carbon holders 36 are arms 62 which are bifurcated at their free ends and are con nected by pins 64 received in their respective slot-s 60.-

In the actual use of my improved lamp thecarbons can be simultaneously adjusted toward or away from each other and that their angular relation to each other can at the same time be varied.

I find that in the use of a lamp of this kind it is desirable that the carbons for forming the are should be inclined toward each other at an acute angle for directing the electrons and invisible rays forwardly in a line extending from that bisecting the angle between the carbons.

It will be noted that the handle 12 can be 'grasped with one hand and that the thumb of the'same hand can be used for manipulating the screw 34.

It will be understood that I do not desire to be limited to any particular material in making my lamp and it is my purpose to cover by my claims any changes in the construction and arrangement of parts which may be really included within the scope of my invention.

I claim as my invention:

1. In a lamp of the class described, a support, adapted to serve also as a protective shield, a-handle there on, a. pair of carbon holders mounted on the opposite side of said support for adjustably holding carbons at an acute angle to each other and means actuatable from a position adjacent to the handle and on the handle side of the support and shield for adjusting said holders toward or from each other.

2. In a lamp of the class described, a.

support adapted to serve also as a protective shield, a handle on oneside thereof, a pair of v carbon holders mounted on the opposite side of said support for adjustably holding carbons at an acute angle to each other and means on the opposite side of the support from holders actuatable for adjusting said" holders toward or from each other.

3.-In a portable arc lamp, a support adapted to serve as a shield, carbon holders on one side of the support adjustable for varying the angle of the carbons held and their spacing from each other, and means for effecting such adjustment including a member projecting through the support whereby the carbon holders may be adjusted from behind the support.

4. In a portable arc lamp, a support adapted to serve as a shield, carbon holders on one side of the support adjustable for varying the angle of the carbons held and their spacing from each other, and means 7 for effecting such adjustment including a member projecting throughthe support and a handle on the other side of the support ad jacent to the projecting part of said means whereby said means may be actuated by the thumb of a hand grasping the handle on the opposite side of the support from the carbon holders.

5. In a portable arc lamp, a support adapted to serve as a shield, posts projecting LLOYD BROWN. 

